484 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



The ectalmost portion of the duct, which passes into the center of the 

 dorsal face of the copulatory chamber, is also slender but is firm, 

 smooth, and glistening. This portion of the duct is covered over by 

 connective tissue — on first opening the worm only the middle portion 

 of the duct is visible. The thick part of the duct may be straight 

 or bent into a C-shape. The copulatory chambers are large and 

 project conspicuously into the coelomic cavity. The wall of a cham- 

 ber is rather thick, so that the lumen is small. On the anterior as 

 well as on the posterior face of each copulatory chamber is an ovoidal 

 glandular mass. From each mass a short stalk passes to a thin-walled 

 sac. The latter opens into the lumen of the copulatory chamber by 

 a rather large pore. Within each sac is a single, circular, flat or 

 convex genital marking to which the stalk of the gland can be traced. 



The spermathecal duct is shorter than the ampulla, abruptly nar- 

 rowed within the parietes ectal to the diverticular junction. Wlien 

 the spermathecal duct is carefully pulled out from the parietes after 

 separating the longitudinal muscle fibers the tiny papilla on which 

 the spermathecal pore is located is removed. The spermathecal duct 

 does not appear to be clearly marked off from the ampulla, but this 

 appearance is due to the fact that the ectal portion of the ampulla is 

 pushed down around and bound to the ental end of the duct by con- 

 nective tissue. If this tissue is cut and the ectal margin of the 

 ampulla pushed up, the duct has a bulbous or almost spheroidal 

 appearance. The stalk of the diverticulum is longer than the sper- 

 mathecal duct and may be straight or closely and shortly zigzag- 

 looped in an ental portion. The wider seminal chamber may be 

 straight or also looped. 



Remarks. — The Hamburg specimens are soft and in very poor con- 

 dition. As a result of the post-mortem changes the tissues have been 

 gelatinized into a very sticky condition ; the body wall is transparent 

 and the internal organs are gummed together. In this condition 

 little of value can be noted with regard to the external characteristics 

 or internal anatomy. Two specimens were completely ruined by 

 attempting to study them while moist. Four other specimens were 

 pinned out on boards and opened carefully by a middorsal incision. 

 The worms were then allowed to dry slowly for an hour in a warm 

 room. At the end of that time the tissues had dried out so that it 

 was possible to separate the organs and manipulate the septa and 

 other membranes and even to work out accurately the characteristics 

 of the testis sacs. The setal numbers and the characteristics of the 

 genital markings and male pore areas are the only points of im- 

 portance that could not be satisfactorily studied on these dried speci- 

 mens. Except for the characteristics just mentioned the Kowloon 

 and the Szechwan specimens are alike. 



